package token;

import org.apache.log4j.Logger;

import java.math.BigInteger;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

/**
 * Created by yangluhua on 2016/9/10 0010.
 */
public class TokenHandler {
    public static void main(String[] args) {
        String ss = "1,2,";

        System.out.println(ss.substring(0,ss.lastIndexOf(",")));
    }
}
